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Added stderr & stdout redirection examples (#28153)

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anthonyjvoss
2019-05-12 11:39:12 -05:00
committed by Randell Dawson
parent 18acffecad
commit f4a196ab0e
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guide/english/bash/bash-redirection/index.md
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@ -28,3 +28,18 @@ sort textfile.txt | uniq
``` ```
will first sort each line in the file alpahabetically and then print only the unique entries. This is only scratching the surface of the massive power of pipes though. will first sort each line in the file alpahabetically and then print only the unique entries. This is only scratching the surface of the massive power of pipes though.
## Bash Redirect StdOut & StdErr
Another great use case is redirection of stdout(1) and stderr(2) streams.
To simply hide the output, redirect the corresponding stream to null. The below example displays no stdout stream to the console. All stderr output will still be visible.
somecommand 1>null
The more common use is to hide any stderr output from the console. This example hides all stderr output.
somecommand 2>null
You can also hide all output using the '&' symbol.
sommecommand &>null